randomiseTemplates.C
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25 
26 #include "volFields.H"
27 #include "Random.H"
28 
29 // * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
30 
31 template<class Type>
32 bool Foam::functionObjects::randomise::calcRandomised()
33 {
34  typedef GeometricField<Type, fvPatchField, volMesh> VolFieldType;
35 
36  if (foundObject<VolFieldType>(fieldName_))
37  {
38  const VolFieldType& field = lookupObject<VolFieldType>(fieldName_);
39 
40  tmp<VolFieldType> rfieldt(new VolFieldType(field));
41  VolFieldType& rfield = rfieldt.ref();
42 
43  Random rand(1234567);
44 
45  forAll(field, celli)
46  {
47  Type rndPert = rand.sample01<Type>();
48  rndPert = 2.0*rndPert - pTraits<Type>::one;
49  rndPert /= mag(rndPert);
50  rfield[celli] += magPerturbation_*rndPert;
51  }
52 
53  return store(resultName_, rfieldt);
54  }
55  else
56  {
57  return false;
58  }
59 }
60 
61 
62 // ************************************************************************* //
#define forAll(list, i)
Loop across all elements in list.
Definition: UList.H:434
word resultName_
Name of result field.
const word fieldName_
Name of field to process.
bool store(const tmp< ObjectType > &tfield)
Store the given field in the objectRegistry.
dimensioned< scalar > mag(const dimensioned< Type > &)